RG503 Retro Handheld Game Console 4.95 Inch OLED Display Linux System 16+256G February 25, 2024 rg503 No Comments RG503 Retro Handheld Game Console 4.95 Inch OLED Display Linux System 16+256G. Tags : 16256g | console | display | game | handheld | inch | linux | oled | retro | rg503 | system